QMixTrainer is not imported in RLlib

How severe does this issue affect your experience of using Ray?

  • Medium: It contributes to significant difficulty to complete my task, but I can work around it.

Hello!

Currently, I try to execute a code in an example.

The problem is that QMixTrainer is not imported!

I think, it maybe has been updated with something different name.
But, I couldn’t find it.

The below image is about an error log I got.
image

So, could you help with this problem?
(This problem’s subject might seem to be similar to a question posted by my co-worker a few hours ago, but I believe that this is another issue.)

Thank you.